If you're looking forward to lots of outings with your partner, check out these details about year-round temperatures in Lenzerheide: The hottest months are usually July and August with an average temp of 52°F, while the coldest months are January and February with an average of 22°F. The snowiest months in Lenzerheide are April, May, November, and January, with each month seeing an average of 5 inches of snowfall.